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Stock-Based Compensation (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Oct. 16, 2013
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Stock Based Compensation [Abstract]        
Stock options granted   0 0 0
Stock options outstanding   0    
Stock options exercise price description may not be exercised at a price which is less than 100% of the fair market value of shares at the date of grant      
Weighted average grant date fair value of restricted stock that vested during   $ 1,792,000   $ 2,276,000
Net value of unrecognized compensation cost related to unvested restricted stock awards   2,354,000 $ 1,896,000 4,195,000
Restricted Stock [Member]        
Stock Based Compensation [Abstract]        
Stock-Based Compensation expense   $ 1,335,000 $ 2,221,000 $ 2,129,000
Shares, Granted   77,913 0 72,985
Recognized tax benefits   $ 121,000 $ 235,000 $ 227,000
Stock Option [Member]        
Stock Based Compensation [Abstract]        
Stock-Based Compensation expense   $ 0 $ 0 $ 0
Class A Common Stock | Stock Option [Member]        
Stock Based Compensation [Abstract]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 990,000      
Class A Common Stock | Incentive Compensation Plan [Member]        
Stock Based Compensation [Abstract]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 620,000      
Class A Common Stock | Convert For Class B [Member]        
Stock Based Compensation [Abstract]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 370,000      
Class B Common Stock | Stock Option [Member]        
Stock Based Compensation [Abstract]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 370,000